Safe-door.



M. MOSLER & C. BARTELS.

SAFE noon. APPLICATION FILED JULY 13,1916

4 Patented Mg. 28, 191'? Moses MOS/6B 60M) Barn m Inventors Td AE MOSESMOSLER, OF CINCINNATI, AND CARL BARTELS, 0F HAMILTON, OHIO, ASSIG-NORSTO THE MOSLER SAFE COMPANY, OF NEW YORK, N. Y.

SAFE-DOOR.

Specification of Letters Patent.

Patented Aug. 28, 1917,.

The present invention has reference to a safe-door, integrally cast ofunmachineable metal, such as manganese steel, and the invent-ion will bereadily understood from the following description taken in connectionwith the accompanying drawing in which Figure 1 is a cross-section inthe plane of line a of Fig. 2, of a safe-door exemplifying ourinvention:

Fig. 2 a rear view of the door, shown as being in rectangular form,portions appearing in the plane of line b of Fig. 1: and

Fig. 3 a similar rear view of the door, shown as being in circular form.

In the drawing 1, indicates the safe-door, assumed as being integrallycast of unmachineable metal, such as manganese steel, the door beingillustrated as having its perimeter provided with steps, as usual:

2, a bolt-frame member integrally cast with the door and projectingrearwardly from the stepped portion of the door:

3, a rearwardly open recess formed at the rear face of the door andmargined by the bolt-frame 2:

4, a back-plate, of machineable metal, disposed within the rear recessof the door and firmly secured against the rear face of the door andmargined by the bolt-frame member 2: a

5, a bolt-frame member carried by the back-plate inwardly of theboltframe memher 2 which is cast with the door:

6, rivets serving to typify means for securing the back-plate to theback of the door: and

7, bolts sliding in bolt-frame members 2 and 5.

The back-plate 4 not only carries one of the bolt-frame members, but,being of machineable metal, it serves for the reception of bolt-movingmechanism, locks, &c.

The backplate may be secured firmly to the back of the door and withinthe rear recess by any appropriate means, the typical means illustratedconsisting of studs integrally cast upon the back of the door andprojecting through apertures in the backplate and riveted at the rearsurface of the back-plate.

While the term unmachineable metal may not be strictly correct anddefinite, it is nevertheless a term ordinarily applied to such materialas manganese steel castings employed in safe construction, and this termis of frequent employment in patents relating to safes involvingmanganese steel, and the term is well understood in the art. We employthe term in the present case as meaning a metal, such as manganese steelfor instance, which is not susceptible of being treated, to anypracticable degree, by any of the machining processes employed in shops.

We claim:

1. In a safe door structure, the combination of a door casting ofunmachineable metal having on its rear face an integral bolt flange nearits perimeter, said flange outlining a recess, a back plate ofmachineable metal located entirely within said recess, means forsecuring said back plate to the door casting, said means being locatedwithin said recess and independent of the bolts, another bolt flangecarried by said back plate and a plurality of bolts each pass ingthrough alined holes in the two bolt flanges.

2. In a safe door structure, the combination of a door casting ofunmachineable metal having near the perimeter of its rear face anintegral bolt flange outlining a re cess, the door casting also havingintegral rivets within said recess, a back plate of machineable metallocated entirely within said recess, the back plate being provided withrivet holes to receive said rivets, the back plate being secured by therivets and independently of the bolts, another bolt flange carried bysaid back plate, and a plurality of bolts each passing through alinedholes in the two bolt flanges.

MOSES MOSLER. CARL BARTELS.

Witnesses:

G. M. GOLDSMITH, HENRY G. Mosmrn.

flopiea of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. G.

